Dustguard



Patented Aug. 30V,V 1932 PTENTOFHCE GERALD swALLow, or BarDGEPoaT,PENNSYLVANIA, 'AssIGfNoaL` LLasNia: ASSIGN- MENTS, ToCONTINENTAL-DIAMOND naar. coiurANY, or` NEWAnLDELAWfABE, A

CORPORATION oF DELAWARE Dusreuann .Application led May 5,

This invention relates to improvements in dust guards for the journalsof railroad Vrolling stock, and the principal object of the in ventionis to Vprovidea dust" guard having characteristics which more generallyfit it for the conditions under which it operates than the dust guardsof prior manufacture.

More specifically, the invention contemplates the provision of a dustguardwhich shall be impervious to oil and grease, shall not split orfracture in use, which shall have flexibility sufficient to render itself-adjustable to the movements of the journal members, which shall beonly slightly subject to frictional wear, and which shall form a snugfit with the axle and shall maintain such lit guard, and

Figs. 6 and 7 are views. in perspective of dust guards of modified formwithin the scope of the invention. n

With particular reference to Figs. 1 and 2 of the drawing, it will benoted that the journal which may be of standard form com,

prises the usual journal box 1 at the outer end of which is pivotallymounted a cover 2- through which access is had to the interior of thebox, and having its other or inner end open to admit the end of the axle3.` The axle has at its extremity a part 4 constituting the journal uponwhich bears the usual journal block 5 which supports the box 1 and thecar body in the usual manner. At lits inner end the box 1 is providedwith a slotted recess 6 which intersects the opening 7/ at the rear ofthe journal box through which the axle 3 projects, and this slot 6 isadapted for re ception of a suitable dust guard which closely engagesthe axle and which excludes dust and igs. f 3 and 4 may beunited to forma 'double 192s. serial". No. 275,357.

itty material from own manner.l j, l

Inthe present instance and as shown in Fig. 3, the dust guard consistsof a flat sheet 8 havingtran'sverse flanges 9, 9 at topand bottom andprovided with an openinglO through which the axle 3 extends and whichconforms closelyto the diameter of the part 3a of the axle so that theguard closelyfits the 4,axle andforms therewith' a substantiall tightdust-excludiig joint. As shown in igs. l and 2,'thew1dth ofthe guard 8conforms closely to the width of the slot 6- which it occupies, whilethe flanges 9 are of suchwidth as to tneatly between the opposite wallsof the slot,"as clearlyV illustrated', solthat the guard thusnotonlyfits neatly around the journal but also fits `snu 1 into therecess in the journal box providefilr its reception. It will benotedthat the anges 9 function to hold the dust. guard relatively fixedin the slot and also to stien and strengthen the ,n I have discoveredthat vulcanized libre is particularly well adapted for dust guard thejournalbox in well purposes, and that by forming the guard of Y nsolution and superimposing the treatedlsheets `to;form -a laminated bodyof desired thickness, all in well 'known manner, is substantiallyimpervious tooil and grease, and its physical characteristicsxaresuchthat it will conditions. Vulcanized fibre alsoi is subject to veryslight frictional wear,and the close fit between the guard and .the axlejournal' will ,accordingly be 4maintained over long periods of use. AAdust guardmade as described, while having the necessary strength, stillpossesses suicient flexibility to permit it toadjust itself readily tothe relative movements between the axle and the journal box and thereby.is not subject to'wear and adverse `strains to the same extentas anentirely rigid ardf .i v Obviously .theremay beconsiderable'modinotvsplit .or fractureunder normal operating j cation in thevform of thedust guard without departure from the invention. By combining the guardshown in Fig. 3 for example with that shown in Fig. 4, a double guardsuch as illustrated in Fig. 5 will be formed. The guardvshowny in Fig. 3has the outturned flanges fonly at; top and bottom,wher'eas inthat shownin Fig. 4, the flangesu designated .y

l1` are at the sides. By laying these two Yguards'together with `theflanges turned" inwardly, as shown inv Fig. 5,' a Vsubstantially closedcasing is formed which will accurately fit the recess 6 in the journalbox and through which the axle will extend in. obvious -manner. In thisinstance, there willbe two joints v between the 'dustguardandf-theaxleyone` co" operating with the other toexclude dust :from

the bearing. Infthati'orml ofwguard'shown in fFig. 1,2-the`gii-ppermostgiiange `9 i closes the top ofthe recess 6,-andl :thissameflangey funcv tions in'the-device shown :'inFigrz inthe same,guardis in all respects`similary toythevguard illustrated in Fig. a3,With `the exception that mannerg Y Y A broader. contact between the dustAguard f q and the axle may behadfin 'the form ofdevice shown in Fig. 6.f Inivthisinstance, the' dust thereV is :provided around theppening l2`throughfwhich the axle-projects a angel,

which inassembly closely surrounds theaxle. i In the embodiment shownin;Fig. 7, the deiviceis provided with integral-flanges 14,

which inthis instance'project from all four sides ofthe device. Y

There may be still' other modiications f l' without vdepartureffromthe'4 invention.

I claim: 1. As an article of manufacture,a dustguard-forjournal'boxshavin'gran'opening at 40l one end, an axleprojecting into said box, said box having atransverse slotvintersecting' the aperture through which the shaft' projects,

lsaiddustfguardincluding a thinfflexible'nonmetallic sheet adaptedto-abutt one wall 'ofg'the slot,said. sheet having at itsupperand 'lowerf edges flangesadapted tnaextend between: said -Wall of the-slotandrftheopposed wallffthereof `and maintain the'flangededgeportion*s of they'sheet incontactfwifth theirstnamed wall, the

sheet yfurther having f al1-opening: for Tand of approximately the`AsameA diameter as the'axle. i 2. As lan article' ofwfmanufactureg yaf-dust I guard for'jou-rnal boxeshaving aniopening at one end; anaxle'projectingfinto saidbox.' said .boxhaving antransverse slot.intersecting the aperture throughl -which :the shaft projects, (saiddust guard including 'a :thin exible fnonmetalhcsheet adapted to abutone wall ofthe `wall oflthe .slot and the opposedi Wall thereof andmaintam-the flang'edredgeportionsfof the sheet in contactswithithefirst-nalnedwalhthe sheet further having an opening 'for-.and ofapproximatelyith'samdiameteras the aXle-,l

slot, said sheet having .at itsupper and 'lower Y l edges :flangesadapted Aktoextend between said

